High-fidelity modeling of dynamic origami folding using Absolute Nodal Coordinate Formulation (ANCF)
High-fidelity modeling of dynamic origami folding using Absolute Nodal Coordinate Formulation (ANCF)
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DOI：
10.1016/j.mechrescom.2023.104089
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发表时间：
2023-03
影响因子：
2.4
通讯作者：
Jiayu Tao;Ahmed E. Eldeeb;Suyi Li
中科院分区：
文献类型：
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作者：
Jiayu Tao;Ahmed E. Eldeeb;Suyi Li
折纸已经发展成为一个框架，用于创建不同规模的工程系统：从大型可部署的机身到建筑材料，再到小型DNA机器。这些新兴的应用需要我们开发高保真模型，可以模拟和检查折叠引起的机械响应，特别是那些涉及显着的小平面旋转，非均匀变形，和复杂的动力学。为此，本研究制定和实验验证了一个新的折纸力学模型的基础上绝对节点坐标公式（ANCF），这对于预测大旋转和变形的多体系统的非线性动力学具有独特的优势。这个新的模型将折纸小平面视为ANCF薄板元件围绕柔性折痕旋转。此外，扭转弹簧阻尼器致动器（TSDA）连接器的发展，以代表折痕折叠。经过仔细的校准实验测得的本构材料性能，这项研究提供了第一次报道的定量协议模拟预测和实验结果，涉及复杂和不均匀的小平面变形和瞬态动态响应。因此，这个模型可以帮助加深我们对折叠诱导的力学和动力学的了解，促进折纸的未来应用。
Origami has evolved into a framework for creating engineering systems at vastly different scales: from large deployable airframes to architected materials to small DNA machines. These emerging applications require us to develop high-fidelity models that can simulate and examine folding-induced mechanical responses, especially those involving significant facet rotation, non-uniform deformation, and complex dynamics. To this end, this study formulates and experimentally validates a new origami mechanics model based on Absolute Nodal Coordinate Formulation (ANCF), which has unique advantages for predicting the nonlinear dynamics of multibody systems with large rotation and deformation. This new model treats origami facets as ANCF thin plate elements rotating around compliant creases. Moreover, Torsional Spring Damper Actuator (TSDA) connectors are developed to represent crease folding. After careful calibration with experimentally measured constitutive material properties, this study provides the first reported quantitative agreement between simulation predictions and experiment results involving complex and non-uniform facet deformation and transient dynamic responses. Therefore, this model can help deepen our knowledge of folding-induced mechanics and dynamics, fostering future applications for origami.